X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fdefine-music-properties.scm;h=f8c567d1fa09d50958744e22e18166b8c1ec67d5;hb=1db7333bd35dc000e1cdde0286d7bf8384cb3b28;hp=4df3f933405fd4a1be7ea953eae62912a295bcb5;hpb=dd9cdec4d7fb538b3a201f3b82a10b5ac9ef5f79;p=lilypond.git

diff --git a/scm/define-music-properties.scm b/scm/define-music-properties.scm
index 4df3f93340..f8c567d1fa 100644
--- a/scm/define-music-properties.scm
+++ b/scm/define-music-properties.scm
@@ -183,7 +183,7 @@ If zero, signals a beat containing varying durations.")
 Options are @code{'text} and @code{'hairpin}.")
      (span-text ,markup? "The displayed text for dynamic text
 spanners (e.g., cresc.)")
-     (spanner-id ,string? "Identifier to distinguish concurrent spanners.")
+     (spanner-id ,key? "Identifier to distinguish concurrent spanners.")
      (start-callback ,procedure? "Function to compute the negative length
 of starting grace notes.  This property can only be defined as initializer
 in @file{scm/@/define-music-types.scm}.")